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參數(shù)資料
| 型號： | STA016A |
| 廠商： | 意法半導體 |
| 英文描述： | MPEG 2.5 LAYER III AUDIO DECODER SUPPORTING CD-ROM CAPABILITY |
| 中文描述： | 2.5第三層的MPEG音頻解碼器支承的CD - ROM的能力 |
| 文件頁數(shù)： | 3/43頁 |
| 文件大小： | 268K |
| 代理商： | STA016A |
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STA016A
3
The device can decode/process data coming from three possible sources, as showed in Figure 2:
■
CDDSP serial link:
using this input interface, besides MP3 encoded data CD, it's possible to playback
also standard Audio CD using the available volume and tone equalizer features of the device and
allowing the use of only one D/A converter with no external analog switch.
■
SDI input interface:
through this input interface it's possible to decode any MP3 bitstream coming, for
instance, from an external flash memory.
■
I
2
S input interface:
this interface can be used to process an external audio source (tuner, for instance)
through the DSP based volume and tone controls:this BYPASS mode can avoid the use of additional
D/A converters or postprocessing units.
OVERVIEW
3.1 MP3 decoder engine
The MP3 decoder engine is able to decode any Layer III compliant bitstream: MPEG1, MPEG2 and MPEG2.5
streams are supported.
Decoded audio data goes through a software volume control and a two-band equalizer blocks before feeding
the output I
2
S interface. This results in no need for an external audio processor.
Table 4. MPEG Sampling Rates (KHz)
Figure 3. Block Diagram
The basic functions of the device can be fully operated via the I
2
C bus. Besides that the GPSO interface can be
used to move huge amount of data this fast and flexible interface can achieve transfer rates up to 5 Mbit/s.
The embedded DSP firmware implements all the layers required to decode a standard data CD, as shown in
the Figure 4:
MPEG 1
MPEG 2
MPEG 2.5
48
24
12
44.1
22.05
11.025
32
16
8
CDDSP
I/F
SECTOR
BUFFER
SYNC
DETECT.
MMDSP
CORE
- ISO9660 + JOLIET
- BCI
- MP3
DESCRAM.
INPUT SELECTOR
CDROM DECODER (C3)
ECC/EDC
CD_BCK
CD_SDI
CD_LRCK
I
2
S IN
I/F
BCKI
SDI
LRCKI
STB
RQST
I
2
C
I/F
I
2
C
REG BANK
PLL
OSCK
XTI
XTO
OSC
PCM OUTPUT
BUFFER
I
2
S OUT
I/F
GPSO
I/F
SCL
SDA
GPSO_REQ
GPSO_SDO
GPSO_CK
LRCKO
SDO
BCKO
SDI
I/F
BS_BCK
BS_SDI
BS_LRCK
DREQ
D04AU1565
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STA016A13TR | 功能描述:音頻 DSP Audio Decoder RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| STA016AP | 功能描述:音頻 DSP AUDIO SYSTEMS RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| STA016AP13TR | 功能描述:音頻 DSP AUDIO SYSTEMS RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| STA016T | 功能描述:音頻 DSP MPEG Audio Decoder RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| STA016T13TR | 功能描述:音頻 DSP MPEG Audio Decoder RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
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